TCZ

I am intrigued. Does pulling the fuse not throw a warning code?

nodoors

no warning code

RSbob

Tom, how did you discover pulling this fuse leads to better handling? I live in a marijuana state and it never occurred to me.

fyi on an 08 CS it’s fuse 49 in the left pod, but other years and models might vary.

TomF

I certainly can't take credit for it- another Rennlister tried it out and liked the result. I may wire a switch up to mine in lieu of a fuse so that I can re-enable the Servotronic on some of the mind-numbing drives across parts of Eastern Washington where there is nary a curve to be found. Road feel isn't a priority there for me.

J'sWorld

? LOL! Are you saying your dumb from smoking too much? Maybe try a good Sativa?

RSbob

No, I was born this way. . But I will take your rec.

speaking of being a dolt, I am now confused why reinstalling the fuse (via a switch) would make any difference on long straight drives in E Wa. If you are going in mostly a straight line why bother since steering inputs are minimal? (My wife and I drive from Seattle to Spokane a few times a year to visit the mother in law). Just might have to try a long drive to see what you are talking about, which conveniently is coming up this month to the R Gruppe 20th Anniversary drunken bash in Monterrey.

Dilberto

I can proudly say pulling out the vacuum pump/brake booster connector on 955 gives a very linear braking experience. I did it as an experiment to defer doing both brake booster hoses and the braking performance and feel is genuinely pleasant.... if you don't mind a 15% increase in braking effort.

Petrolhead_007

Checked earlier today, my 2009 VR6 doesn't have servotronic fuse, so you can say awesome steering feel was already standard from the beginning!

Libast

My GTS doesn't have that option listed so assuming I have the pure steering as it is (and yes its a bit heavy at low speeds for sure with the big *** tires)

Zakowsky

I'm going to give it a try! In keeping with the theme - I also disconnected the top reference pressure line to the N75, which gives the turbos a faster spool up and top boost numbers, with only a once every few months over-boost code.

But wrt to the steering fuse, to add, after finally giving up on getting AZ850's in/to Canada in 285/35R22, I just got a new set of Asymetrix 3's. I will review later (been testing them out for a few hours but I just got them this morning), first impressions were they suck compared to the Nitto 555's I took off, but after drifting round cloverleaf's in the rain for awhile they now seem like they might be good after all. But anyway wrt to the fuse, I thought they didn't balance them well or they were out of round because at over 120 kph although they were fine with the wheel perfectly straight, as soon as I put enough pressure to engage the steering rack to turn I could feel a very slight vibration. So I was going to take them back tomorrow, but then I tried putting the fuse back in and the vibration went away. So the point being is I think the Servotronic does have an effect going straight at speed as well, smoothing out minor rolling chassis issues (but also smoothing out road feel). Disconnecting it again as soon as I sort out what is up with the tires.

GDA

Bump - just did this today on my 09 Turbo S after I checked all codes [there were none] so used Durametric and reset of all adaptations. Car pulls away and idles even smoother after the adaptation reset.

The servo mod gives the steering a nice firm sense of feedback. Definitely takes more effort at parking lots speeds but actually like it that way. Great mod.

TomF

Great! Glad you find it an improvement. Your post is a reminder that I need to reset my adaptations- it's been a while.

Ericson38

Much heavier.....does this mean this mod stresses a part in the rack or steering column (u Joint )? Our 2010 V6 has servotronic. I haven't pulled 49 yet though, until I understand what the disable actually does and what is left for steering at low speed boost.

TomF

Try it and if you don't like it, you can put the fuse back in two seconds. I can't see how there would be any additional stresses on the parts you referenced.

Ericson38

I'm sure I'll like it, but not the point. The question is what is being loaded that wasn't loaded before. Is the pump a two stage affair, so that removing the boost fuse (what ever a boost even is) just reduces the overall pump output, or ? The car can be steered with engine off, which case results in very heavy loads on the pinion running on top of the sliding rack. So what does this mod actually change at low speed ?